MultiROM is a bit of software, that loads before Android does, and allows the
user to select which OS to load. It supports loading Android images, but also
supports loading a kernel and initramfs from two separate files. This makes it
very easy to load a desktop-style Linux system.

The best way to create a MultiROM-ready OS image is to use [this
template](https://github.com/Tasssadar/multirom/tree/master/installer) to
create a mrom file, which contains the filesystem and configuration for an OS.
The template is heavily annotated and easy to use. Multirom installs the OSs to
Android's /data/media/0/multirom/roms.

